Every vassal country has twenty-four solar terms. Why are there thirty solar terms?

The invention of the twenty-four solar terms in China is one of the important achievements of agricultural civilization in China, which helped China and laid an important position in the history of agricultural civilization. 24 solar terms made an important contribution to the transformation of China from primitive slash-and-burn to small family production system. But the twenty-four solar terms are in the Spring and Autumn Period. There is a country with thirty solar terms. This country is a pot. The reasons are as follows.

First, the geographical position of Qi is quite special, resulting in climatic conditions. First of all, we should know the state of Qi, that is, the land of Shandong and Qilu where we are now. In this area, it is especially close to the ocean, and it is mild and humid all year round, which is a typical temperate humid climate. Shaanxi, China, and An, the ancient capital of the Six Dynasties, had a drier climate than Shandong. According to the climate in Shaanxi, 24 solar terms were formulated, but it was not appropriate to treat Shandong, which is why there were 30 solar terms in Qi.

Second, the theory of Yin-Yang and Five Elements influenced Qi at that time. In fact, we also know that another reason is that in ancient China, in some places, they especially praised the innocence of Yin and Yang, and this place is Qi and Guan Zhong's five theories of Yin and Yang. Jin Mu, which we are familiar with, goes back and forth, where everything comes from, and 30 solar terms just correspond to this place, so they will take 30 solar terms as their national solar terms.

Third, the reason for Qi Yue. You know, the climate in Qi is cool in Leng Xia in winter, and the time in spring and summer is shorter, and the time in autumn and winter is longer. In this place, 36 days is regarded as a month, just 360 days, and they only have 10 month. If 36 days is a solar term, then we can make good use of solar terms for farming, so it can also reflect the intelligence of people at that time.